Table for casting glass.



PATENTED FEB, 18, 1908- L. REMB-AUX. TABLE FOR CASTING GLASS.

APPLICATION FILED OUT. 25, 1906 Z SHEBTB SHEET 1.

Witnesses No. 879,491. PATENTBD FEB. 18, 1903.

L. REMBAUX. TABLE FOR CASTING GLASS.

APPLICATION FILED GOT. 25, 1906.

2 SHEETS-SHEET 2.

Witnesses I I I lnventun W (Zm LEON REMBAUX, OF MOUSTIER SUESAMB'RE, BELGIUM.

TABLE FOR CASTING GLASS.

Specification of Letters Patent.

Patented Feb. 18,1908.

Application filed er 25. 1906- Serial No. 340.572;

To all whom it may concern:

Be it known that I, LEON REMBAUX, a subject of the Kin of Belgium, residing at 189 Rue de la Station, Moustier sur Sambre, in the Kingdom of Belgium, constructional engineer, have invented certain new and useful Improvements in or Connected with Tables for Casting Glass, of which the following is a specification, reference being had to the accompanying drawings and to the figures and letters marked thereon.

At the present time the casting of glass is performed upon rectangular and moving 'or rolling casting tables which are generally composed of several parts of suitable thick ness assembled and fastened together by the aid of bolts and keys. The thickness of these tables is relatively considerable and provided to resist the effects of the heat produced by contact with the melted glass and to be su'fliciently strong to support the weight of the expanding roller. Notwithstanding this thickness, after having run several casts of glass, the temperature of the table is rapidly raised (to about 80 or 90 centigrade) and this rise of temperature produces a very considerable expansion of the upper surface of the table with relation to the lower part with the result that the table is deformed and bulges upward principally in a transverse direction. The convexity thus produced gives rise to a very serious inconvenience; the spreading leveling or flatten-- I ing roller bears with considerable pressure upon the table and the glass becomes of unequal thickness, thinner in the middle producing a manufacture having great disadvantages in the other phases of the making up of glass articles. Furthermore .glass badly cooled in the annealing oven is frequently broken, gives rise to much waste in cutting up, creates difliculty in obtaining large dimensions, increases the work and at the same time produces a new increase in the waste in the operation of polishing. Attempts have been made to partly remedy this inconvenience by making the spreading or leveling roller slightly concave but this produces atthe commencement of work the opposite fault that is to say the first casts of glass are, by this arrangement, thicker 1n the middle than at the edges and when the temperature of the roller rises the effect of its curvature disappears little by little while the table also commences its expansion bringing back the inverse inconveniences. It is easy to realize the advantages which would accrue from a table remaining quite plane and in which the heat produces a minimum of deformation during the progress of the work. These different considerations have given rise to the present invention and caused the construction of a practical device consisting of a casting table interiorly cooled by a continuous and multiple circulation of water which is hereinafter described and represented in the drawings hereunto annexed in which I Figure 1 is a side elevation partly in section, the section being taken'on the line AB of Fig. 2 of the casting table. Fig. 2 is a plan thereof partly in section the section being taken on the line C D of Fig. l. Fi 3 is a sectional end elevation the section taken on the line E F G H I J of Fig. 2.

The table proper is composed of a series of parts or sections a preferably formed of cast iron and these sections are rectangular in cross section and are provided with open sided channels b cast with the sections for the passage of bolts 0 and assembling keys at by which means no part of the table lies out of contact with the water. Thelower wall or bottom carries pipes e for the passage of water and manholes f for cleaning and all the sections a are formed with two compartments separated by a partition 9. The series of sections are connected by bent tubes h which establish interior communication in such manner as to bring the water from the center of the table in several currents toward the edges by a series of circuits into the different compartments.

A glance at the accompanying drawings will enable. the course of the water in the interior of the table to be easily understood.

In order to assure the distribution of the water a water reservoir *6 is arranged beneath the table together with a centrifugal high toward the exterior by the middle sections a',

' then returns to the center by the neighboring sections a across the unions hand 6 and thus in such manner that itat last finds an exit under a pressure slightly lower to that of its admission by four spring valves q. The

water i'n' this -manner carries off the'heat from the center of the table toward'the sides by spreading or distributing it toward the 4. Facili'ty for] utting oven the glass ad ering -5. The cooling of breakages,

neighboring sections a number of times during the cast; It follows [that .'-the heat 'is distributed, in :a. uniform manner among all the-sections and that theexterior'or side sections preserve approximately .the same temperature as those of the center always penetrating more rapidly into the. bottom of the table which prevents the deformation thereofby transverse bulging leaving the latter quite plane during the work of casting The temperature of the circulation water may rise from, 20to 65 without inconvenience. According to whether the casting is to be done from the right or left side of'the table it will be. possible to render the introduction. of the Water stronger. onfone side thanthe other by aid of the sluices or valves n. The working ,of' the circulation is done simply with :regularity'and great facility and the problem 1 consisting in removingfand distributing raf ionally the heat imparted by the melted glass, is realized.

I The table is mounted upon a' double truck having eight wheels. 1* which are mounted upon ball bearings so as to give the minimum of resistancein'rotation.

7 I-he casting table thus constructed possesses or produces the advantages below enumerated.

' 1.. 'Regularity'in the thickness of the glass.-

-' 2. The spreading of the glass upon a table having] a uniformly distributed heat. 1 Theobtaining of a greater useful surface with'the same quantity of glass.

ess to the table. of the glass with a mimthe sheet into the Consequences 6. Greater production. 7

7. The diminution of the time of raising to the polishing stage. i

8. Diminution in the waste of glass in this operation.

9. :Perfect. planimetry as well as diminished weight. l

l0. Possibilityofconstructinglarger tables.

11. Facility for traveling of the latter. 4

l2. Resulting from these diflerent advantages considerable economy in raw materials and in manufacture.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to' be performed .I declare that what I claim is 1. The combination with a table for casting glass and having internal cooling passages, of'a reservoir carried by the table and connected to the cooling passages and means on the table to cause the water to circulate from the reservoir through the passages and backinto the reservoir.

2. The combination with a table for casting .glass and having internalwater-cooling passages, of a reservoir, a pump and a motor,

all carried .by the table, said pump and.

reservoir included in the Water circuit,' whereby the motor will drive the pump to draw water from the reservoir and force it through the table.

3. The combination with a table for casting glass and having internal water cooling passages, of a reservoir, a centrifugal pump and an electrical motordirectly connected to the pump, allsecured to and beneath the vtable, said pump and reservoir connected to the cooling passages to form therewith a continuous circuit.

In witness whereof I'have hereunto set my hand in the presence of two witnesses.

v I LEON 'REMBAUX.

. Witnesses:

HENRI DE SMET; JULEs GHILAIN. 

